\({H^ + } = \sqrt {Kc} \) \( = \sqrt {4.5 \times {{10}^{ - 3}} \times 1.7 \times {{10}^{ - 10}} \times .01} \)
\( = 0.87 \times {10^{ - 7}}\)\(pH = - \log \;0.87 \times {10^{ - 7}}\)\( = 7 - 0.93 = 6.1\).
આપેલ : $K _{ a }\left( CH _{3} CH _{2} COOH \right)=1.3 \times 10^{-5}$
$2N{H_3}\, \rightleftharpoons \,N{H_4}^ + \, + \,N{H_2}^ - $